Ramp - Danfoss VLT HVAC Basic Drive Programming Manual

Parameters
3-15 Reference 1 Source
Option: Function:
[2] Analog in 54
[11] Local bus
reference
3-16 Reference 2 Source
Option: Function:
Select the input to be used for the second
reference signal. 3-15 Reference 1 Source,
3-16 Reference 2 Source and 3-17 Reference
3 Source define up to three different
reference signals. The sum of these
reference signals defines the actual
reference. See also 1-93 Thermistor Source.
[0] No function
[1] Analog in 53
[2] Analog in 54
*
[11] Local bus
reference
3-17 Reference 3 Source
Option: Function:
Select the reference input to be used for
the third reference signal. 3-15 Reference 1
Source, 3-16 Reference 2 Source and
3-17 Reference 3 Source define up to three
different reference signals. The sum of
these reference signals defines the actual
reference.
This parameter cannot be adjusted while
the motor is running.
[0] No function
[1] Analog in 53
[2] Analog in 54
[11] Local bus
*
reference
VLT HVAC Basic Drive Programming Guide

3.4.3 3-4* Ramp 1

Configure the ramp parameter, ramping times, for each of
the two ramps (parameter group 3-4* and parameter group
3-5*).
3-41 Ramp 1 Ramp up Time
Range:
Size
related
3-42 Ramp 1 Ramp Down Time
Range:
Size
related
3.4.4 3-5* Ramp 2
Choosing ramp parameters, see parameter group 3-4*.
3-51 Ramp 2 Ramp up Time
Range:
Size related
®
MG.18.B1.02 - VLT is a registered Danfoss trademark
RPM
P 4-14
High-limit
Reference
P 1-23
Motor
frequency
P 4-12
Low limit
P 3-*1
Ramp (X)Up
Time (Acc)
t
acc
Function:
[0.05 - Enter acceleration time from 0Hz to
3600.0 s] Motor Frequency in par 1-23. Choose a
*
ramp-up time such that the output
current does not exceed the current
limit in par. 4-18 Current Limit during
ramping. See ramp down time in par.
3-42.
Function:
[0.05 - Enter the deceleration time from 0 Hz
3600.0 s] the Motor Frequency in par 1-23 to 0
*
Hz. Choose a ramp-up time such that
the output current does not exceed the
current limit in par. 4-18 Current Limit
during ramping. See ramp-up time in
par. 3-41.
Function:
[0.05 - Enter acceleration time from 0 Hz to
*
3600.0 s] 1-23 Motor Frequency. Choose a ramp-
up time such that the output current
does not exceed the current limit in
4-18 Current Limit during ramping. See
ramp-down time in3-52 Ramp 2 Ramp
down Time.
3 3
Time
P 3-*2
Ramp (X)
Down
Time (Dec)
t
dec
31